San Diego (Creative Commons)

DeMaio currently has 51 percent of the vote and Filner has 49 percent, reports the L.A. Times.

Whoever wins will replace termed-out Mayor Jerry Sander, a Republican.

Filner, 70, has served on the school board and City Council and in Congress for 10 terms.

DeMaio, 38, was a council member in a suburban district and has sponsored voter-approved measures.

Reach Executive Producer Hannah Madans here.